-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2408
         Security Bulletin: Remote code execution vulnerability in
               the JSF used by WebSphere Application Server
                              17 August 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM WebSphere Application Server
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   IBM i
                   Solaris
                   Windows
                   z/OS
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10716525

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: Remote code execution vulnerability in the JSF used by
WebSphere Application Server

Document information

More support for: WebSphere Application Server

Software version: 7.0, 8.0, 8.5.5

Operating system(s): AIX, HP-UX, IBM i, Solaris, Windows, z/OS

Software edition: Advanced, Base, Developer, Enterprise, Express, Network
Deployment, Single Server

Reference #: 0716525

Modified date: 15 August 2018

Summary

There is a remote code execution vulnerability in the JSF Sun Reference
Implementation 1.2 used by WebSphere Application Server. The JSF Sun Reference
Implementation 1.2 is used as the default in WebSphere Application Server
v7.0, other versions it is not the default.

Vulnerability Details

CVEID: Not Applicable
DESCRIPTION: Apache MyFaces and Oracle Mojarra could allow a remote attacker
to execute arbitrary code on the system, caused by improper configuration of
ViewState settings. If ViewState is configured to use unencrypted state
information, an attacker could exploit this vulnerability to execute any code
residing in the server's classpath.
CVSS Base Score: 8.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
145172 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM
WebSphere Application Server:

  o Version 8.5
  o Version 8.0
  o Version 7.0

Remediation/Fixes

The recommended solution is to apply the interim fix, Fix Pack or PTF
containing APARs PI99524 for each named product as soon as practical.  JSF
SunRI 1.2 is the default implementation for WebSphere Application Server
Version 7.  For Version 8.0 and Version 8.5 , JSF SunRI 1.2 is not the default
JSF, you would only be vulnerable if you have changed to use JSF SunRI 1.2. 

For WebSphere Application Server traditional and WebSphere Application Server
Hypervisor Edition using JSF Sun Reference Implementation 1.2:

For V8.5.0.0 through 8.5.5.14: (not default JSF)
. Upgrade to minimal fix pack levels as required by interim fixes and then
apply Interim Fix PI99524
- --OR--
. Apply Fix Pack 8.5.5.15 or later (targeted availability 1Q2019).

For V8.0.0.0 through 8.0.0.15: (not default JSF)
. Upgrade to a minimal fix pack levels as required by interim fix and then
apply Interim Fix PI99524

For V7.0.0.0 through 7.0.0.45:
. Upgrade to a minimal fix pack levels as required by interim fix and then
apply Interim Fix PI99524

WebSphere Application Server V7 and V8 are no longer in full support; IBM
recommends upgrading to a fixed, supported version/release/platform of the
product.

Change History

14 August 2018: original document published

*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT
OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=/ds1
-----END PGP SIGNATURE-----